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Patented June 19, 1888.

r (No Model.)

G. F. TEBBETTS.

l MACHINE FOR ROLLING METAL ARTICLES TO FORM. i No. 384,878.

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2 Sheets-Sheet 2.

L e d 0 M 0 N G. F. TEBBETTS.

MAGHINE FOR ROLLING METAL ARTICLES TO FORM.

Patented June 19,1888.

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CHARLES E. TEB'BETTS, OF

FITGHBURG, MASSACHUSETTS, ASSIGNOB TO THE TEBBETTS ROLLED FORGING ANDMACHINE COMPANY, on KIT- TERY, MAINE.

MACHINE FOR ROLLING METAL ARTICLES TO FORM.

SPECIFICATION forming part of Letters Fateut No. 384,878, dated June 19,1888.

Application filed December 15, 1887. Serial Norfiimfliifi. (No model.) ii m To all whom it may concern.-

Be it known that I, CHARLES F. TEBBETTS, of Fitchburg, county ofWorcester, and Commonwealth of Massachusetts, have invented certainImprovements in Machines for Rolling Metal Articles to Form, of whichthe following, taken in connection with the accompanying drawings, is aspecification.

This invention relates to machines for rolling metal articles spherical,cylindrical, or other contour having circular crosssectional area, andthe nature thereof is fully described and then specifically claimedhereinafter.

In the drawings, Figurel is a vertical central section of a machineconstructed in accordance with and embodying this invention. Fig.

2 is a plan view of the die-platens and dies mounted thereon. Fig. 3 isa perspective View representing a die for making spheres or balls.

It should be understood that the dies are used in pairs and move inopposite directions past each other to compress and shape articles ofmetal or other suitable material rolled on.

their axis between them; and this invention relates mainly to themechanism for supporting and operating the dies. It also relates tomatters of construction and arrangement of a gage to assist the workmanin positioning the metallic rod relatively to the approaching dies, ashereinafter more fully described.

The dies have been described in Letters Patent of the United States No.367,682, heretofore granted to me, and to which reference may be had.These dies are mounted upon revolving platens A B, as shown in Fig. 2.The platen A is mounted upon a pin, b,whieh pin is supported in themachineframe D. The platen bears its central hub upon the frame D andpermits being revolved on the pin. The platen B is supported in asimilar manner on the pin 6, which pin is fixed to the verticallymovablearm E. Said arm E is arranged to slide vertically up and down itssupporting standard or shell F, and to this end it is provided withappropriate grooves to receive the projecting edges (not shown) of thestandard F,whereby it is supported. The standard F consists of a hollowshell formation projecting upward from the machine-frame D, to which itis firmly and immovably fixed.

I Extending from the arm E is a boss, f, which may be formed integralwith the arm,or, preferably, a separate piece suitably bolted to thearm, as represented in Fig. 1. This boss extends rearward throughasuitable opening in the standard F, and is provided with a socket.

and screw-thread to receive shaft 71, as shown, whereby the upward anddownward movements of the arm are effected in an obvious manner. Saidboss is further provided with a crown-gear, 4, which is journaledto-permit revolving in its supportinglooss. Said gear is arranged uponthe vertical shaft 5 and per mits longitudinal sliding movement on theshaft. Itissuitablysplinedtoberevolvedbythe shaft. 6, on shaft 7,whichshaft 7 is arranged to revolve in its supporting-arm E,and carries agear, 8, that engages the gear 9, which is formed integral with theplaten B. In other words, it engages a system of gear-teeth, 9, cut in acircle on the rear face of the platen B. Connected and integral with theplaten Aisa similar gear or system of gear-teeth, 10, that engage agear, 11, on the shaft 12. Said shaft 12 is journaled in themachine-frame B, and is revolved by a suitable driving mechanism, asrepresented.

On the shaft 12 is a gear, 13, that engages Said gear meshes with asimilargear,

with a gear, 14, and transmits the motion of shaft 12, throughintermediate mechanism, to the shaft 7, thus compelling the shafts 7 and12 to revolve simultaneously, to the end that the platens A B may beturned on their pivotal pins simultaneously in opposite directions, forthe purpose of bringing the forming-dies into position for moldingtheintended article. The die-platens are driven continuously round andbring the dies into action successively, and I prefer to mount aseriesof dies on each platen, each pair of whichmay be brought intoaction while the others are beingcarried round the circuit. This enablesme to keep the machine in constant use without overheating the dies. Thedies when out of use and passing round the circuit are constantlycooling.

The series may be enlarged to a greater nnmdies and their operation uponthe metal is fully described in the Letters Patent above referred to.

Supported on the pin bis a rest, 16, inwhich' the metallic bar isrested, as shown. Attached to the machine-frame D is a hollow standard,17, adapted to receive and support, as-shown in Fig. 1, the gage 18.Said gage comprises also the horizontal tube 20, and is verticallyadjustable by means of a screw, 19. It may be lifted and depressed tomeet the requirements of difi'erent-sized dies. The tube 20 is madeadjustable longitudinally by the screw 22, to the end that it may bemoved up to or away from the dies. "It has a central bore to receive andsupport the end of the rod 21. The small tip of metal removed from theend of the rod 21 by action of the dies remains in the tube, and ispushed rearward by the next forward movement of the rod 21, and so ontill itfinally drops out of the tube and falls to the machineframe orfloor below.

Whenever it becomes necessary to separate the platens to permit theintroduction of different-sized dies, it may be done by an obvious turnof the wheel 24, which lifts and depresses the supporting-arm E. On theshaft 7, also on the shaft 12, are conical wheels 25, that bear andtravel on a suitable path, 26, on the dieplatens. These wheels are onopposite sides of the dies a a while operating on the metalliq bar andsupportthe die-platens to prevent their being broken or cramped.

As an aid in understanding the construction of the dies and theoperation thereof upon the metallic bar and other minor matters,reference may be had to the Letters Patent above referred to.

I am aware that machines for rolling metal articles to form havingrevolving platens and forming-dies mounted upon the curved faces thereofare not new, and I. do not claim the same as a part of my invention; but

\Vhat I do claim, and desire to secure by Let tersPatent, is

1. In a machine for rolling metal articles to form, the combination oftwo plane-faced rotary die-supporting platens, as A B, a twopartformingdie mounted, one member on the plane face of one and the othermember on the opposing plane face of the other platen, and means forrotating the platens progressively, to bring the co operating diemembers up to and past each other repeatedly, substantially asdescribed.

2. In a machine for rolling metal articles to form, two pivotallysupported plane -faced rotary die supporting platens, one or moretwo-part forming-dies, one member of each die being mounted on the planeface of one and the co-operating members on the opposing plane face ofthe other platen, and means for rotating the platens progressively,substantially as and for the purposes described.

3. In a machinefor rolling metal articles to form, the combination oftwo die-supporting platens and a series of two-part forming-dies, onemember of each die being mounted on one and the co-operating members onthe opposing face of the other platen, respectively, and supporting andoperating mechanism whereby the platens are moved progressively to makethe die members approach and pass each other, substantially asdescribed.

4.. In a machine for rolling metal articles to form, the combination oftwo plane-faced rotary die-supporting platens, as A B, a twopartforming-die mounted, one member on the plane face of one and the othermember on the opposing plane face of the other platen, and means forrotating the platens progressively, to bring the cooperating die membersup to and past each other repeatedly, and a gage for supporting themetallic rod operated on between the dies, substantially as described.

5. In a machine for rolling metal articles to form, the combination oftwo plane-faced rotary die-supporting platens, as A B, atwopartforming-die mounted, one member on the plane face of one and theother member on the opposing plane face of the other platen, and meansfor rotating the platens progressively, to bring the cooperating diemembers up to and past each other repeatedly, and an adjustable gage forsupporting the metallic rod operated upon between the dies,substantially as described.

6.. In a machine for rolling metal articles to form, thepivotally-supported die-platens A B and dies mounted on the facesthereof, combined with the supporting rolls 25, arranged to bear uponthe platens, and means for rotating the platens, substantially as setforth.

7. In a machine for rolling metal articles to form, the die-supportingplatens A B, the dies a a, mounted on the faces thereof, the gears 8 l1,engaging the platens, as described, the supporting-rolls 25, shafts 712, and connecting and operating mechanisms, in combination,substantially as set forth.

8. In a machine for rolling metal articles to form and in combination,substantially as set forth, the standard F, the bracket-arm E, supportedmovably on said standard, and the diesupporting platens and operatingmechanisms, substantially as described.

Signed at Boston, Massachusetts, this 6th day of December, A. D. 1887.

CHARLES F. TEBBEITS.

Witnesses:

H. O. STRAT'roN, O. B. TUTTLE.

